Year	Number
1960	15882942
1961	15974602
1962	16122316
1963	16293427
1964	16444801
1965	16567643
1966	16665879
1967	16737840
1968	16791120
1969	16832243
1970	16869174
1971	16905371
1972	16962781
1973	17044971
1974	17132173
1975	17234148
1976	17342926
1977	17450553
1978	17564700
1979	17699322
1980	17907967
1981	18137873
1982	18339009
1983	18551176
1984	18750418
1985	18881207
1986	18966530
1987	19056124
1988	19138160
1989	19217086
1990	19289088
1991	19404657
1992	19483936
1993	19471194
1994	19443834
1995	19390391
1996	19330443
1997	19282008
1998	19229773
1999	19169472
2000	19109256
2001	19055902
2002	19017858
2003	19043620
2004	19111233
2005	19124658
2006	19102478
2007	19148415
2008	19236343
2009	19274366
2010	19286658
2011	19246702
2012	19211108
2013	19363208
2014	19470483
2015	19407371
2016	19362338
2017	19340502
2018	19315832
2019	19078096
2020	18961785
2021	18848949
2022	18758773
2023	18667132